Thermodynamic Analysis of a Solar Driven Tri-generation System for Building Applications

Özcan, Hasan; Dinçer, İbrahim

doi:10.1007/978-3-319-04681-5_15

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…There can be found several studies that were adopted the sustainability index method for the sustainability assessment of cogeneration and tri-generation power plants for various areas. Ozcan and Dincer (2014) analyzed a tri-generation system consisting of parabolic trough solar collectors, an ORC, an absorption chiller and a thermal energy storage system. They obtained that the sustainability of the system improves with higher solar irradiation and lower ambient temperature.…”

Section: Literature Survey On Exergy Based Sustainability Assessment Of Energy Systemsmentioning

confidence: 99%

Exergy Based Sustainability Assessment of an Orc Integrated Waste Heat Recovery System for Marine Vessels

Konur¹,

Saatçıoğlu²,

Çolpan

2021

Dokuz Eylül Üniversitesi Denizcilik Fakültesi Dergisi

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This paper introduces the basics of exergy-based sustainability assessment and the framework that should be shaped within the first stage. The sustainability assessment framework leads to sustainability indicators that are used to assist policymakers and decision-making processes. The literature review shows that the energy systems are suited to sustainability assessment with exergy based assessment tools and indicators from an environmental point of view. In this study, an exergy based sustainability assessment is carried out by using the exergy analyses results of an ORC (organic Rankine cycle) integrated waste heat recovery system on a 1,221 TEU container ship. The exergy analysis results are used to derive comparable and quantified exergetic sustainability indicators that indicate the sustainability level and further improvement potentials with the utilization of the proposed waste heat recovery system design. The assessment results show that the minimum waste exergy ratio is obtained with the value of 0.106 when R1234ze(Z) is used and the evaporating pressure is 3 MPa. R1234ze(Z) and R245fa working fluids show good environmental performance for the proposed system design. The maximum exergetic sustainability index value is obtained with the value of 8.435 when R1234ze(Z) is used and the evaporating pressure is 3 MPa.

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Section: Literature Survey On Exergy Based Sustainability Assessment Of Energy Systemsmentioning

confidence: 99%

Exergy Based Sustainability Assessment of an Orc Integrated Waste Heat Recovery System for Marine Vessels

Konur¹,

Saatçıoğlu²,

Çolpan

2021

Dokuz Eylül Üniversitesi Denizcilik Fakültesi Dergisi

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“…The exergy efficiency COPex [26] is generally expressed as the ratio of total exergy output to total exergy input and is written as follows:…”

Section: T T τ =mentioning

confidence: 99%

Thermodynamic Analysis of a Waste Heat Driven Vuilleumier Cycle Heat Pump

Xie

Sun

2015

Entropy

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A Vuilleumier (VM) cycle heat pump is a closed gas cycle driven by heat energy. It has the highest performance among all known heat driven technologies. In this paper, two thermodynamic analyses, including energy and exergy analysis, are carried out to evaluate the application of a VM cycle heat pump for waste heat utilization. For a prototype VM cycle heat pump, equations for theoretical and actual cycles are established. Under the given conditions, the exergy efficiency for the theoretical cycle is 0.23 compared to 0.15 for the actual cycle. This is due to losses taking place in the actual cycle. Reheat losses and flow friction losses account for almost 83% of the total losses. Investigation of the effect of heat source temperature, cycle pressure and speed on the exergy efficiency indicate that the low temperature waste heat is a suitable heat source for a VM cycle heat pump. The selected cycle pressure should be higher than 100 MPa, and 200-300 rpm is the optimum speed.

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“…The absorption chiller cycle runs with LiBr-water solution as the working fluid at vacuum conditions to provide cooling load [23,24]. After releasing high-grade heat to Mg-Cl, steam Rankine cycle, and SMR system, lowertemperature heat is used to provide heat for the absorption chiller.…”

Section: System Descriptionmentioning

confidence: 99%

“…Steam Rankine cycle is considered to be a threestage turbine with reheating and regeneration for better utilization of the heat source, for higher amount of power production and system efficiency. The absorption chiller cycle runs with LiBr-water solution as the working fluid at vacuum conditions to provide cooling load [23,24].…”

Section: System Descriptionmentioning

confidence: 99%

Thermodynamic and environmental impact assessment of steam methane reforming and magnesium-chlorine cycle-based multigeneration systems

Özcan

Dinçer

2015

Int. J. Energy Res.

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Summary In this study, thermodynamic analyses and environmental impact assessments of two integrated systems are comparatively performed for multigenerational applications. The first system consists of a heliostat solar heat and power generation field as energy source, a magnesium–chlorine (Mg–Cl) hybrid thermochemical cycle for hydrogen production, a steam Rankine cycle for power production, and a LiBr–water absorption chiller cycle for space cooling application. The second system is same as the first system except that the steam methane reforming (SMR) which considered for hydrogen production instead of Mg–Cl cycle. The SMR method is commonly used to produce hydrogen; however, it has disadvantages such as releasing CO2 emissions and utilizing fossil fuels for reforming. Mg–Cl cycle can be considered as a promising thermoelectrochemical cycle for water splitting because of its simplicity and applicability as well as possessing higher energy and exergy efficiencies and stability of chemical reactions throughout the cycle. Comparative energy and exergy performance assessments of both integrated systems are performed, and their assessment results are presented and discussed. In addition to the performance evaluation, environmental impact and sustainability assessments of both integrated systems are performed. Furthermore, the study compares two hydrogen production systems in terms of their performances and environmental impacts at varying conditions. Energy and exergy efficiencies of the present systems are found to be 28.4–18.4% for the system I and 43.2–27.4% for the system II, respectively. Exergetic sustainability of SMR‐based system is higher than that of Mg–Cl‐based system. However, Mg–Cl system does not emit greenhouse gases during production and is more environmentally benign in terms of greenhouse gas emissions. Copyright © 2015 John Wiley & Sons, Ltd.

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Thermodynamic Analysis of a Solar Driven Tri-generation System for Building Applications

Cited by 3 publications

References 21 publications

Exergy Based Sustainability Assessment of an Orc Integrated Waste Heat Recovery System for Marine Vessels

Exergy Based Sustainability Assessment of an Orc Integrated Waste Heat Recovery System for Marine Vessels

Thermodynamic Analysis of a Waste Heat Driven Vuilleumier Cycle Heat Pump

Thermodynamic and environmental impact assessment of steam methane reforming and magnesium-chlorine cycle-based multigeneration systems

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